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Showing 1 to 15 of 15 for “"oxide dispersion strengthened"”.
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Friction Consolidation of Oxide Dispersion Strengthened Incoloy ® Alloy Ma956 Powder
… resistance at elevated temperatures thanks to oxide dispersion strengthening.</p> <p>The conventional processing route utilized to obtain this alloy involves two main multistep stages. The first (or front end) stage of the process consists of a dry, high-energy milling process which mixes very …
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Directional Recrystallization of an Additively Manufactured Oxide Dispersion-Strengthened Nickel-Base Superalloy
… behaviors of an additively manufactured (AM) oxide dispersion-strengthened (ODS) NiCoCr medium entropy alloy, focusing specifically on the effects of a liquid phase, annealing twins, and aluminum microalloying additions on recrystallization kinetics. Conventional wrought ODS alloys achieve …
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Advanced characterizations of austenitic oxide dispersion-strengthened (ODS) steels for high-temperature reactor applications
… with densely and dispersedly distributed oxide nanoparticles that are capable of not only pinning dislocations but also trapping radiation-induced defects, oxide dispersion-strengthened (ODS) steels provide excellence in mechanical strength, creep resistance, and radiation tolerance. In …
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High energy x-ray diffraction microstructural analysis of oxide dispersion strengthened steel for advanced nuclear systems
Oxide dispersion strengthened (ODS) steel exhibits exceptional radiation resistance and high-temperature creep strength when compared to traditional ferritic and martensitic steels. ODS steel has been considered one of most promising structural materials for advanced nuclear systems. In this study, …
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Friction stir welding of high temperature alloys
… of Ti-6Al-4V alloy, nickel-based and iron-based oxide dispersion strengthened (ODS) alloys (MA754 and MA956) has been studied. The main aspects covered include tool evaluation, microstructural evolution, mechanical properties, and correlation between processing, microstructure and mechanical …
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Hydrogen and helium effects on reduced activation Fe-Cr ferrite-martensite and ODS steels
… reduced activation ferrite-martensite (RAFM) and oxide dispersion strengthened (ODS) RAFM steels, which are promising materials for Gen IV nuclear reactor systems. Hydrogen and helium uptake in RAFM and ODS-RAFM steels are studied by thermal desorption spectroscopy (TDS) evidencing the higher …
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Magnetic Detection of Microstructural Change in Power Plant Steels
… for superior heat resistance. A study of an oxide dispersion strengthened ferrous alloy, in which the microstructure undergoes dramatic coarsening on recrystallisation, was used to investigate further the effects of grain boundaries and particles on Barkhausen noise. The findings from these …
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Creep and anelasticity of conventional and ODS steels
… mechanisms within the crystalline domains. The Oxide Dispersion Strengthened (ODS) 316L steel had its mechanical properties characterised, with particular focus on the creep response, analysed under the scope of performance requirements established by structural integrity code for materials in …
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Modelling of Graphite Elements and Low Enriched Fuel Assemblies for a High Temperature Gas-Cooled Reactor
… the performance of stainless-steel cladding, oxide dispersion strengthened (ODS) steel cladding samples fabricated with high velocity oxy-fuel deposition were investigated. The XRD and XRF analyses led to the conclusion that rapid cooling after deposition results in an amorphous microstructure …
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First-principles studies on oxide nanoclusters in bcc Fe
… Several materials are developed, amongst them Oxide Dispersion Strengthened (ODS) steels also called Nanostructured Ferritic Alloys (NFA). NFA consist of Fe-Cr based ferritic/martensitic steels that contain highly dispersed nanometer-size Y-Ti-O nanoclusters, and are manufactured via powder …
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MULTI-PHYSICS DESIGN AND ANALYSES OF LONG LIFE REACTORS FOR LUNAR OUTPOSTS
… (SC-SCoRe) with a monolithic solid core of Oxide Dispersion Strengthened Molybdenum (ODS-Mo) achieves a long operational life of 21 years at a nominal power of 1,000 kWth. The high thermal conductivity ODS-Mo core structure allows the reactor to continue safe operation in the event that one …